129981520

素因数分解:

$2^4\times 5^1\times {\mathrm{557}}^1\times {\mathrm{2917}}^1$

素因数の和:3487

約数の個数: 40

約数和(自身を含む): 302853384

約数和(自身を除く): 172871864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 557, 1114, 2228, 2785, 2917, 4456, 5570, 5834, 8912, 11140, 11668, 14585, 22280, 23336, 29170, 44560, 46672, 58340, 116680, 233360, 1624769, 3249538, 6499076, 8123845, 12998152, 16247690, 25996304, 32495380, 64990760, 129981520]

約数ペア:

[(1, 129981520), (2, 64990760), (4, 32495380), (5, 25996304), (8, 16247690), (10, 12998152), (16, 8123845), (20, 6499076), (40, 3249538), (80, 1624769), (557, 233360), (1114, 116680), (2228, 58340), (2785, 46672), (2917, 44560), (4456, 29170), (5570, 23336), (5834, 22280), (8912, 14585), (11140, 11668)]